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I just installed RH 9 on 18 PC's, one of which is serving out dhcpd. These PC's can dual boot between RH and Win2K and the PC's are to be used to introduce employee's to openoffice, evolution and a few other linux applications. Out of the 17 dhcp client PC's only 4 pick up dhcp addresses when booted to RH 9 from the dhcpd. If I boot the PC's into Win2K they all pick up IP's from the dhcpd just fine and if I statically assign the IP addresses either in RH 9 or Win2K they all work fine. Logging is going to /var/log/messages and the following entry is generated upon failure on the client side:

ifup: Determining IP information for eth0...
ifup: failed, no link present. Check cable?
kernal: ip_tables: © 2000-2002 Netfilter core team

I installed all the PC's the same way on the RH install. None of them are using a RH firewall. hosts.allow and hosts.deny have no entries. After checking the log on the PC serving out dhcp I can see the broadcasts from those hosts requesting an IP successfully and the server offering back the IP. I can't see any of the problem PC's broadcasting a request which leads me to believe that the request is not being sent from the client out on the network. I know the cables are all good because they work fine with static IP's assigned to the NIC's and the work fine with static or dhcp when booted from Win2K. Any help would be appreciated.

I had a similar problem with redhat 9 and obtaining IP addresses from a RHEL dhcp server. After I installed all upgrades to the RedHat 9 box, it worked correctly.

You might pick one of the non-working RedHat boxes and use apt-get (top file here) ... install via the command:

rpm -Uvh apt-0.5.5cnc6-fr1.i386.rpm

Then replace the file /etc/apt/sources.list with this info:
# Red Hat Linux 9
rpm redhat/9/i386 os updates freshrpms
### Dag Apt Repository for Red Hat 9
rpm redhat/9.0/en/i386 dag
rpm redhat/en/i386/9.0 newrpms
rpm redhat/9/en/i386 at-testing at-bleeding at-good at-stable

Then do:

apt-get update
apt-get dist-upgrade

If you also want to upgrade the kernel (I recommend the new kernel too), do:

apt-get install kernel#2.4.20-31.9
apt-get install kernel-source#2.4.20-31.9

See if a reboot works for getting an IP address...
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